FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger For The HK MR223 & HK MR556

Overview

The FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger For The HK MR223 & HK MR556 is a direct drop-in upgrade engineered specifically for the HK MR223 and MR556 platform. Developed by Rare Breed, this trigger utilizes a forced-reset mechanism that returns the trigger forward immediately after each shot, enabling rapid follow-up shots while maintaining semi-automatic function. The three-position selector provides safe, semi-automatic, and forced-reset modes, giving the operator precise control over firing speed. Built from heat-treated steel and precision-machined components, the FRT-MR3™ delivers consistent performance under sustained use. This unit is designed exclusively for the HK MR223 and MR556 lower receivers and requires no permanent modifications to the firearm.

Features & Specs

• Three-position safety selector: safe, semi-automatic, and forced-reset mode for variable rate of fire control
• Single-stage trigger pull with a crisp, repeatable break and short reset travel in forced-reset mode
• Manufactured from hardened steel with a corrosion-resistant finish for long-term reliability in adverse conditions
• Precision EDM-cut internal components ensure consistent engagement and minimal take-up across all three positions
• Drop-in design requires no gunsmithing; installs directly into factory HK MR223 or MR556 lower receivers
• Compatible with standard mil-spec trigger pins and hammer springs included in the kit
• Weight: 4.2 ounces; overall length: 3.25 inches

Who It’s For

The FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger For The HK MR223 & HK MR556 is intended for experienced shooters who demand faster follow-up shot capability without converting their rifle to full-automatic. This product is suitable for competitive shooters in divisions that allow forced-reset triggers, as well as for law enforcement and military personnel who train with precision-timed shot strings. It is also appropriate for civilian enthusiasts who understand the mechanical operation of forced-reset systems and seek to maximize the performance of their HK-platform rifle. This trigger is not recommended for new shooters or for use in rapid-fire drills without prior training on forced-reset manipulation. Always verify local, state, and federal regulations regarding forced-reset trigger ownership before purchasing.

Shipping & FFL

This FRT-MR3™ trigger ships directly to your address. A Federal Firearms License (FFL) transfer is not required for this product because it is a firearm component, not a serialized receiver. However, some states and localities impose restrictions on forced-reset triggers. It is your responsibility to confirm that the FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger For The HK MR223 & HK MR556 is legal in your jurisdiction before placing an order. We ship via UPS Ground or USPS Priority Mail with signature confirmation. Orders are processed within one business day. No returns or exchanges are accepted on installed trigger components. For additional shipping details, refer to our terms and conditions page.